package com.health.mapp.utils;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.io.OutputStream;
import java.util.HashMap;
import java.util.Map;

import javax.imageio.ImageIO;

import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
 
 
 public final class QRCodeMatrixToImageWriter {
 
   private static final int BLACK = 0xFF000000;
   private static final int WHITE = 0xFFFFFFFF;
 
   private QRCodeMatrixToImageWriter() {}
 
   
   public static BufferedImage toBufferedImage(BitMatrix matrix) {
     int width = matrix.getWidth();
     int height = matrix.getHeight();
     BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
     for (int x = 0; x < width; x++) {
       for (int y = 0; y < height; y++) {
         image.setRGB(x, y, matrix.get(x, y) ? BLACK : WHITE);
       }
     }
     return image;
   }
 
   
   public static void writeToFile(BitMatrix matrix, String format, File file)
       throws IOException {
     BufferedImage image = toBufferedImage(matrix);
     if (!ImageIO.write(image, format, file)) {
       throw new IOException("Could not write an image of format " + format + " to " + file);
     }
   }
 
   
   public static void writeToStream(BitMatrix matrix, String format, OutputStream stream)
       throws IOException {
     BufferedImage image = toBufferedImage(matrix);
     if (!ImageIO.write(image, format, stream)) {
       throw new IOException("Could not write an image of format " + format);
     }
   }
   
	/**
	 * 当文件夹不存在时，mkdirs会自动创建多层目录，区别于mkdir．(mkdir如果父目录不存在则会抛出异常)
	 * @author lanyuan
	 * Email: mmm333zzz520@163.com
	 * @date 2013-12-11 上午10:16:36
	 * @param destPath 存放目录
	 */
	public static void mkdirs(String destPath) {
		File file =new File(destPath);    
		//当文件夹不存在时，mkdirs会自动创建多层目录，区别于mkdir．(mkdir如果父目录不存在则会抛出异常)
		if (!file.exists() && !file.isDirectory()) {
			file.mkdirs();
		}
	}
   
   
   public static void main(String[] args) {
	   try {
           
		     String content = "儿童姓名-男-2018/01/23-张先生-13412341526-北京市顺义区李桥镇李桥街道李天路2号10室";
		     String path = "C:/Users/Administrator/Desktop/testImage/barcode";
		     
		     MultiFormatWriter multiFormatWriter = new MultiFormatWriter();
		     
		     Map hints = new HashMap();
		 	 hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.L);
		     hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
		     mkdirs(path);
		     BitMatrix bitMatrix = multiFormatWriter.encode(content, BarcodeFormat.QR_CODE, 300, 300,hints);
		     File file1 = new File(path,"LL.jpg");
		     QRCodeMatrixToImageWriter.writeToFile(bitMatrix, "jpg", file1);
		     
		 } catch (Exception e) {
		     e.printStackTrace();
		 }
   }
 
 }